LG MS-192H Service Manual page 12

COMPONENTS
TIMER MOTOR
(Wire leads removed)
FAN MOTOR
(Wire leads removed)
TURNTABLE
MOTOR
(Wire leads removed)
NOTE : • A MICROWAVE LEAKAGE TEST MUST ALWAYS BE PERFORMED WHEN THE UNIT IS
SERVICED FOR ANY REASON.
• MAKE SURE THE WIRE LEADS ARE IN THE CORRECT POSITION.
• WHEN REMOVING THE WIRE LEADS FROM THE PARTS, BE SURE TO GRASP THE
CONNECTOR, NOT THE WIRES.
TEST PROCEDURE
Measure the resistance.
(Ohm-meter scale: R x 100)
A
B
C
Measure the resistance.
(Ohm-meter scale: R x 1000)
5-11
RESULTS
Turn on
C
A
(2-3)
B
B
(2-M)
Note: A is ON,OFF switch B is
power supply terminal of the
timer motor C is defrost switch
A
(1-2)
Normal:
A ~ B
30 ~ 50Ω
Abnormal: ∞ or several Ω
Normal: Approx. 100~200 Ω
Abnormal: ∞ or several Ω
Turn Off
Approx. 25 K §
A ~ C
300~500Ω